Disord of visual cortex in vasc disord, left side of brain

This code signifies visual disturbances originating from damage to the left visual cortex, specifically when the underlying cause is a vascular event. This typically manifests as a contralateral homonymous hemianopsia or quadrantanopsia, affecting the right visual field. The impairment is neurological, not an issue with the eye itself.

Use this code for patients presenting with visual field deficits definitively attributed to a vascular lesion (e.g., stroke, hemorrhage) impacting the left occipital lobe. Documentation must clearly state the laterality of the brain involvement and the vascular etiology. This code is appropriate when the visual cortex is the primary site of the disorder.

• Ensure documentation specifies "left side of brain" and a vascular cause for the visual cortex disorder.
• Do not use this code for visual field defects due to optic nerve or chiasm lesions; those have different codes.
• Always sequence the underlying vascular condition (e.g., cerebral infarction, cerebral hemorrhage) as the primary diagnosis if it is the reason for the encounter.